SmogRank / World / Asia / Japan / Toyama

Most polluted cities in Toyama, Japan

No city in Toyama, Japan has enough readings to rank for the last 30 days.

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Estimated: cities without a monitor

Toyama cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City	7-day estimate	Band
Nanto-shi	≈ 4 µg/m³	Good
Nanto	≈ 4 µg/m³	Good
Himi	≈ 6 µg/m³	Good
Kurobe-shi	≈ 5 µg/m³	Good
Nishishinminato	≈ 6 µg/m³	Good
Gohyakkoku	≈ 6 µg/m³	Good
Yatsuomachi-higashikumisaka	≈ 3 µg/m³	Good
Kamiichi	≈ 6 µg/m³	Good
Fukumitsu	≈ 4 µg/m³	Good

Bad-air episodes in Toyama

• Japan and South Korea, July 202616 to 25 July 2026, 10 days205 cities39 µg/m³peak, Mooka
• Japan and South Korea, March 202623 to 31 March 2026, 9 days322 cities86 µg/m³peak, Pohang
• Japan and South Korea, June and July 202530 June to 10 July 2025, 11 days532 cities117 µg/m³peak, Kōka
• Japan, May 202520 to 21 May 2025, 2 days107 cities34 µg/m³peak, Ayase
• Japan and South Korea, March 202521 to 27 March 2025, 7 days479 cities320 µg/m³peak, Yecheon
• Japan and South Korea, February and March 202526 February to 2 March 2025, 5 days200 cities70 µg/m³peak, Fukuyama

Times when many cities around here had PM2.5 at twice their usual or more on the same days.

Updated 2026-10-06 23:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.